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- PDB-7xuj: Human SLC26A3 in complex with UK5099 -

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Basic information

Entry
Database: PDB / ID: 7xuj
TitleHuman SLC26A3 in complex with UK5099
ComponentsChloride anion exchanger
KeywordsTRANSPORT PROTEIN / Inhibitor / Transporter
Function / homology
Function and homology information


Defective SLC26A3 causes congenital secretory chloride diarrhea 1 (DIAR1) / Multifunctional anion exchangers / sulfate transmembrane transporter activity / oxalate transmembrane transporter activity / secondary active sulfate transmembrane transporter activity / intracellular pH elevation / chloride:bicarbonate antiporter activity / solute:inorganic anion antiporter activity / membrane hyperpolarization / bicarbonate transmembrane transporter activity ...Defective SLC26A3 causes congenital secretory chloride diarrhea 1 (DIAR1) / Multifunctional anion exchangers / sulfate transmembrane transporter activity / oxalate transmembrane transporter activity / secondary active sulfate transmembrane transporter activity / intracellular pH elevation / chloride:bicarbonate antiporter activity / solute:inorganic anion antiporter activity / membrane hyperpolarization / bicarbonate transmembrane transporter activity / monoatomic anion transport / chloride transmembrane transporter activity / sperm capacitation / monoatomic ion transport / cellular response to cAMP / sperm midpiece / brush border membrane / apical plasma membrane / membrane / plasma membrane
Similarity search - Function
Sulphate anion transporter, conserved site / SLC26A transporters signature. / SLC26A/SulP transporter / SLC26A/SulP transporter domain / Sulfate permease family / STAS domain / STAS domain profile. / STAS domain / STAS domain superfamily
Similarity search - Domain/homology
Chem-I2R / CHOLESTEROL HEMISUCCINATE / Chloride anion exchanger
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsLi, X.R. / Chi, X.M. / Zhang, Y.Y. / Zhou, Q.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)31971123 China
CitationJournal: To Be Published
Title: human SLC26A3 in complex with UK5099
Authors: Li, X.R. / Chi, X.M. / Zhang, Y.Y. / Zhou, Q.
History
DepositionMay 18, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0May 24, 2023Provider: repository / Type: Initial release
Revision 1.1Jul 3, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond / em_admin / Item: _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Chloride anion exchanger
B: Chloride anion exchanger
hetero molecules


Theoretical massNumber of molelcules
Total (without water)163,13812
Polymers158,6672
Non-polymers4,47010
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Chloride anion exchanger / Down-regulated in adenoma / Protein DRA / Solute carrier family 26 member 3


Mass: 79333.672 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SLC26A3, DRA / Production host: Homo sapiens (human) / References: UniProt: P40879
#2: Chemical ChemComp-I2R / (E)-2-cyano-3-(1-phenylindol-3-yl)prop-2-enoic acid / UK-5099


Mass: 288.300 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C18H12N2O2 / Feature type: SUBJECT OF INVESTIGATION
#3: Chemical
ChemComp-Y01 / CHOLESTEROL HEMISUCCINATE


Mass: 486.726 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: C31H50O4
Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: human SLC26A3 in complex with UK5099 / Type: CELL / Entity ID: #1 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2200 nm / Nominal defocus min: 1200 nm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.14_3260: / Classification: refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 2277517 / Symmetry type: POINT

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